If you're an active farmer in Famrville, you would definitely appreciate this firefox add-on:
You can see the details at their homepage, plus the download link. But since you're reading this blog, I'll just immediately give you the download link..
Once you've installed it and firefox has restarted, go to the add-ons pop-up window (Tools - Add-ons) then click on Extensions and look for Feed Filter. You can adjust the settings in the Option button located at the left side.
photo credits to http://www[dot]chocolatesoftware[dot]com.